Nivve

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Santander

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Mods that only change flags don't seem to affect the checksum at all.
 

Nivve

General
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Graphics, localisation and music WON'T change checksum. Basically every mod that makes changes in common, event, decision, history and/or map WILL.

Good to know, thanks :)
 

dorimi

VS mods creator
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zombieflanders

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FWIW, here are the non-overhaul/TC mods I have, and whether or not they change the checksum, and therefore disable achievements:

ARKOpack Armoiries: Yes
Better Mountains: Yes
CKII UI Font Mod: No
Climate Classification: Yes
Cultural Cities: Yes
Cultural Cities (compatible): No
Cultures and Portraits Revamp: Yes
Keyboard Shortcuts+Interface Adjust: No
Minimap (Emboss): No
NBRT+ (0.6): No*
NBRT+ (0.7): Yes*
Portrait_Realignment: Yes


* NBRT+ has been discontinued, but I had a backup of the last two versions. NBRT+V0.7 changed the checksum, due to what looks to be a new trees.bmp in /map